diff --git a/shipment.py b/shipment.py
index 712db4f6f2..1179991373 100644
--- a/shipment.py
+++ b/shipment.py
@@ -2377,6 +2377,7 @@ class ShipmentInternal(Workflow, ModelSQL, ModelView):
         pass
 
     @classmethod
+    @ModelView.button
     @Workflow.transition('shipped')
     @set_employee('shipped_by')
     def ship(cls, shipments):